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What is an OOM?</TITLE>
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<A NAME="CACDBDEG"></A><h1>What is an OOM?</h1>
<A NAME="TI1136"></A><p>An OOM is a structure that provides a close description of
a system using Unified Modeling Language (UML) diagrams. </p>
<A NAME="TI1137"></A><p>A diagram is a graphical view of a model or package, which
displays object symbols. Diagrams allow you to split the display
of large models and packages in order to focus on certain objects
or subject areas. They can also be used to view the symbols of the
same objects, displayed with different kinds of information. With
the PowerDesigner plug-in for PowerBuilder, the class diagram is
the single type available. A class diagram describes the structure
of model elements.</p>
<A NAME="TI1138"></A><p>You can create several diagrams in a model or in a package.
The diagram window usually appears with a specialized toolbar called
the tool palette, from which you can select tools to create objects
in your models and packages. </p>
<A NAME="TI1139"></A><p>All diagrams have a name and graphical contents. They are
projections of the model and they represent it from different angles.
They are sorted alphabetically in the PowerDesigner Browser except
for the default diagram, which is the first in the list. Each diagram
has its own icon to help you quickly identify its type in the Browser. <A HREF="pbugp33.htm#CACJEFFB">Figure 4-1</A> shows a class
diagram in the PowerDesigner Browser.</p>
<A NAME="TI1140"></A><p>With the PowerDesigner plug-in for PowerBuilder, you can open
a PowerDesigner OOM file in PowerBuilder, but you see only the class
diagrams saved in the file. You can also save a class diagram that
you create with the plug-in and open that file directly in PowerDesigner. </p>
<A NAME="CACJEFFB"></A><caption><b>Figure 4-1: PowerDesigner Browser displaying
a class diagram</b></captionls>
<br><img src="images/pdbrowse.gif">
<A NAME="TI1141"></A><p>For more information about the OOM, see the PowerDesigner
documentation on the <A HREF="http://www.sybase.com/support/manuals/">Product Manuals Web site</A>
.</p>

